Waste Water Treatment Methods

Segneanu, Adina‐Elena; Orbeci, Cristina; Lazău, Carmen; Sfîrloagă, Paula; Vlăzan, Paulina; Bandas, Cornelia; Grozescu, Ioan

doi:10.5772/53755

Cited by 27 publications

(17 citation statements)

References 95 publications

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“…For example, physico-chemical processes like coagulation and flocculation, when applied to different chemical agents (chlorides of aluminum or iron, or polyelectrolytes etc. ), leads to the generation of sludge [8]. Photocatalysis is considered the most promising, effective, and "greener" technique [9][10][11] for eliminating toxic and recalcitrant organic pollutants from the environment by complete mineralization of such pollutants under mild conditions [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Sharma

Pap

Garg

et al. 2019

Applied Surface Science

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Section: Introductionmentioning

confidence: 99%

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Sharma

Pap

Garg

et al. 2019

Applied Surface Science

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“…These techniques include advanced oxidation methods (photocatalytic and catalytic oxidation), membrane separation, MBR, adsorption, and hybrid systems. These techniques can be successfully applied to eliminate contaminants that are incompletely removed by conventional systems, such as suspended solids, heavy metals, colloidal substances, biodegradable organic compounds, phosphorus and nitrogen compounds, microorganisms, and dissolved compounds, thus enabling reusing of residual water [3].…”

Section: Contemporary Techniques For the Removal Of Edcs From Various Water Sourcesmentioning

confidence: 99%

“…Several chemicals (some illicit and some still in circulation) have been considered as EDCs [2]. The increasing accumulation of more EDC micro-contaminants in natural waters is mainly attributable to the advancement and rapid expansion of chemical technologies for organic production and processing [3].…”

Section: Introductionmentioning

confidence: 99%

Contemporary Techniques for Remediating Endocrine-Disrupting Compounds in Various Water Sources: Advances in Treatment Methods and Their Limitations

et al. 2021

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Over the years, the persistent occurrence of superfluous endocrine-disrupting compounds (EDCs) (sub µg L−1) in water has led to serious health disorders in human and aquatic lives, as well as undermined the water quality. At present, there are no generally accepted regulatory discharge limits for the EDCs to avert their possible negative impacts. Moreover, the conventional treatment processes have reportedly failed to remove the persistent EDC pollutants, and this has led researchers to develop alternative treatment methods. Comprehensive information on the recent advances in the existing novel treatment processes and their peculiar limitations is still lacking. In this regard, the various treatment methods for the removal of EDCs are critically studied and reported in this paper. Initially, the occurrences of the EDCs and their attributed effects on humans, aquatic life, and wildlife are systematically reviewed, as well as the applied treatments. The most noticeable advances in the treatment methods include adsorption, catalytic degradation, ozonation, membrane separation, and advanced oxidation processes (AOP), as well as hybrid processes. The recent advances in the treatment technologies available for the elimination of EDCs from various water resources alongside with their associated drawbacks are discussed critically. Besides, the application of hybrid adsorption–membrane treatment using several novel nano-precursors is carefully reviewed. The operating factors influencing the EDCs’ remediations via adsorption is also briefly examined. Interestingly, research findings have indicated that some of the contemporary techniques could achieve more than 99% EDCs removal.

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“…These technologies should be easy to implement and control, cheap in construction and operation costs, highly efficient, environmentally friendly, and implemented on small areas of land with low energy consumption. Several novel technologies meet the previous requirements such as electrochemical oxidation, electro-coagulation EC, electrodialysis ED, photo-electrooxidation, electrochemical disinfection and sterilization, membrane filtration (ultra-filtration, nano-filtration, and reverse osmosis) as well as nano-adsorbents [14][15][16][17][18][19][20][21][22][23]. The integrated and hybrid treatment systems based on these technologies provide an ideal solution for the desired target.…”

Section: Introductionmentioning

confidence: 99%

Integrated treatment of municipal wastewater using advanced electro-membrane filtration system

2019

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Treatment of municipal wastewater using advanced physicochemical process maximizes the removal of biological oxygen demand (BOD 5 ), chemical oxygen demand (COD) and phosphate. Also discarding of suspended solids using nano adsorbent then electrochemical treatment, followed by ultra-filtration membrane was conducted. So, treated wastewater can be reused for agriculture of non-edible or wood trees, fishes, livestock and sheep farming. The results showed that: BOD 5 , COD, and phosphates percent removal of 93%, 95% and 100% respectively. Using mini hydro turbine of power generation about 1.5 k wt/h and with a flow rate of 10-15 L/s. 50% of the energy consumption could be recovered by rotation of the mini hydro-turbine using reject flow. Construction and operating costs of sewage treatment plants can be reduced up to 50% compared with that of traditional low-efficiency biological treatment plants. Sludge produced from the advanced proposed process in this investigation can be used as fertilizer due to its quality while that produced from the traditional treatment process is unsafe to reuse.

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Waste Water Treatment Methods

Cited by 27 publications

References 95 publications

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Hydrothermal synthesis of BiOBr and BiOBr/CNT composites, their photocatalytic activity and the importance of early Bi6O6(OH)3(NO3)3·1.5H2O formation

Contemporary Techniques for Remediating Endocrine-Disrupting Compounds in Various Water Sources: Advances in Treatment Methods and Their Limitations

Integrated treatment of municipal wastewater using advanced electro-membrane filtration system

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